Tank



' 1,613,916 Jan. 11, 1927. I. B. TANNER TANK o i Filed June 27 1925 Patented Jan. 11, 1927.

UNITED STATES PATENT OFFICE.

INOS 1B. TANNER, OF CHICAGO, ILLINOIS, ASSIGNOR TO JOSEPH E. NELSON & SONS, A COPARTNERSI-IIE COMPOSED OF JOHN E. NELSON AND \VILL'IAM H. NELSON, OF

CHICAGO, ILLINOIS.

TANK.

Original application filed June27, 1925, Serial No. 40,022. Divided and this application filed January 22, 1926. Serial No. 83,414.

My invention relates to tanks whose body portions are formed of wooden staves which are supported upon concrete bottoms. Such a tank body portion is, in accordance with my invention, provided with an internal, horizontal annular groove near its lower end and the concrete bottom is formed with an annular ledge that carries the body portion and an upward continuation that is surround by the lower end of said body portion and which continuation is formed with a surrounding annular shoulder that is received in the aforesaid annular groove.

The preferred form of the: invention is shown in the accompanying drawing in which Fig. l is a view of a tank, partially elevation and partially in section, equipped in acordance with my invention; Fig. 2 is a view, on a larger scale, of a part of the structure as it appears in Fig. 1; Fig. 3 is a view, on a smaller scale, on line of Fig. l; and Fig. 4 is a view, on a larger scale, on line 4i-4 of Fig. 1.

The settling tank has a body portion 1 preferably formed of upright wooden staves held together by hoops 2 that are prefer ably in the form of rods. The tank body 1 has a moulded concreteconical bottom 3 formed with an outer ledge t at its larger and upper end upon which the wooden tank body rests and an annular upper continuation about which the lower end of the tank body is disposed and against which the tank body is closely confined by the hoops 2. A surrounding horizontal annular shoulder 6 is included in the formation of the bottom continuation 5 and is snugly received in an internal horizontal annular groove 7 formed within the lower end of the tank body, whereby the joint between the tank body and its concrete bottom is fluid tight.

The fluid tight assembly of the tank body and tank bottom may be reinforced by call:- ing 6'.

Where the tank is employed as a settling tank in water softening equipment it contains a reaction chamber or tank 8. This reaction chamber is supported upon a platform formed of crossed rails 9, preferably channel irons. The chamber 8 is open at its bottom end so that the intermixed water and softening chemical may flow downwardly therefrom through the spaces in the platform into the settling tank. The platform not only serves to support'the tank, but, being moulded into an intermediate portion of the tapering part of the concrete bottom, also serves to reinforce this bottom. To

this end the ends of the rails'comprising the platform may carry cross bars 10, about which the intermediate portion of the tapering part of-the concrete tank bottom is moulded. The present application is a division of my original application No. lO,O22, filed June 27, 1925.

Having thus described my invention, 1 claim:

A tank having a body portion formed of upright wooden staves and having an internal horizontal groove at its lower end and a bottom of concrete having a ledge upon which said body portion rests and an upward continuation entering the lower end of the tank body, said continuation including in its formation a horizontal annular shoulder entering said groove; and hoops surrounding said staves to hold them in assembly with each other and with the tank bottom.

In witness whereof, I hereunto subscribe my name.

INOS B. TAVERN. 

